How to determine whether a variable name exists in an array in JavaScript

Below I will share with you an example of using JavaScript to determine whether a variable name exists in an array. It has great reference value and I hope it will be helpful to everyone.

Go directly to the code:

JavaScript code:

var array=[{name:"张珊",sex:"男"}];
 console.log(array);
 if(array[0].name){
  console.log('name');//返回name
 }

 if(array[0].size){
  console.log('size')
 }else{
  console.log('no size');//返回no size
 }

Print result:

The above is what I compiled for everyone. I hope it will be helpful to everyone in the future.

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